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Journal Article The Signature from Messenger RNA Expression Profiling Can Predict Lymph Node Metastasis with High Accuracy for Non-small Cell Lung Cancer
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Authors
Naeyun Choi, Dae-Soon Son, Jinseon Lee, In-Seung Song, Kyung-Ah Kim, Sang-Ho Park, Yoo-Sung Lim, Gil-Ju Seo, Jungho Han, Hyejin Kim, Hye Won Lee, Jason Jong-ho Kang, Jeong-Sun Seo, Ju Han Kim, Jhingook Kim
Issue Date
2016-09
Citation
Journal of Thoracic Oncology, v.1, no.7, pp.622-628
ISSN
1556-0864
Publisher
Elsevier
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1016/s1556-0864(15)30373-7
Abstract
BACKGROUND: The extent of regional lymph node (LN) metastasis is the most important factor in the evaluation of resectability and prognosis of non-small cell lung cancer (NSCLC) to increase the chance of complete cure. The authors attempted to deduce a group of genes from the analysis of mRNA expression profiles of the tumor tissues of NSCLC patients with or without LN metastasis, and make a classification model for better prediction of LN metastasis. METHODS: The authors analyzed mRNA expression profiles of 79 NSCLC patients with or without LN metastasis, and deduced the gene signature for the predictive model of LN metastasis in lung cancer. The authors evaluated the predictive accuracy of each of four algorithms by applying them to another set of 33 NSCLC patients. Each algorithm's accuracy was calculated by 10-fold cross-validation, and a combined model showed a level of accuracy that was higher than any one of the better three component algorithms (i.e., ANN, DT, or NB). Avadis, SAS, ArrayXPath, and R-package were the statistical analysis software packages used. RESULTS: The authors selected 949 genes using a classical permutation t test (p < 0.01) and finally obtained a gene signature consisting of 31 genes by adjustment of multiple-hypothesis testing. The LN metastasis prediction model derived from the signature (31 genes) and their characteristic interactions provided a predictive accuracy of 84.85% when applied to a test set of 33 patients. CONCLUSIONS: The authors have demonstrated that their gene signature developed by the expression profiling of mRNAs from the primary tissue could predict the LN metastasis status of NSCLC. © 2006International Association for the Study of Lung Cancer.
KSP Keywords
Analysis software, Classification models, Cross validation(CV), Expression profiles, Expression profiling, Gene signature, High accuracy, Hypothesis Testing, Level of accuracy, MRNA expression, Messenger RNA